The 1,3-Diaminobenzene-Derived Aminophosphine Palladium Pincer Complex {C6H3[NHP(piperidinyl)2]2Pd(Cl)} - A Highly Active Suzuki-Miyaura Catalyst with Excellent Functional Group Tolerance

2010 ◽  
Vol 352 (6) ◽  
pp. 1075-1080 ◽  
Author(s):  
Jeanne L. Bolliger ◽  
Christian M. Frech
Keyword(s):  
Functional Group ◽  
Highly Active ◽  
Pincer Complex

A highly active bio-based epoxy resin with multi-functional group: synthesis, characterization, curing and properties

2017 ◽  
Vol 53 (7) ◽  
pp. 5402-5417 ◽  
Author(s):  
Lei Shang ◽  
Xiuping Zhang ◽  
Mengjie Zhang ◽  
Lin Jin ◽  
Liu Liu ◽  
...  
Keyword(s):  
Epoxy Resin ◽  
Functional Group ◽  
Highly Active

scholarly journals Marginal defects modified graphene with S-C-N-C groups for highly selective oxygen reduction to H2O2

2021 ◽  
Author(s):  
Zhixing Mou ◽  
Yue-Wen Mu ◽  
Lijia Liu ◽  
Daili Cao ◽  
Shuai Chen ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Oxygen Reduction ◽  
Self Assembly ◽  
Active Sites ◽  
Functional Group ◽  
H2o2 Production ◽  
Sulfur Source ◽  
Highly Active ◽  
Slow Kinetics ◽  
Doped Graphene

Abstract Developing efficient metal-free catalysts to achieve electrochemical synthesis of hydrogen peroxide (H2O2) is crucial for substituting traditional energy-intensive anthraquinone process. Heteroatom-doped carbon materials have shown great potential toward 2e-pathway for catalyzing oxygen reduction to hydrogen peroxide (ORHP). However, conventional nanocarbon electrocatalysts show slow kinetics toward ORHP due to the weak binding strength with OOH* intermediate, resulting reduction of O2 to H2O. Here, sulfur and nitrogen dual-doped graphene (SNC) electrocatalyst consisting of S-C-N-C functional group are synthesized through hydrothermal self-assembly and nitridation processes with thiourea as sulfur source. In S-C-N-C functional group, pentagon-S and pyrrolic-N are covalently grafted onto the edge of graphene and produce marginal carbon ring defects, which provide highly active sites for catalyzing ORHP. The obtained SNC catalysts deliver an outstanding ORHP activity and selectivity for H2O2 production, while retaining remarkable stability. The experimental and computational results reveal that marginal S-C-N-C functional groups afford an appropriate adsorption strength with OOH* intermediate and a low reaction barrier as well, which are essential for the activity of ORHP.

A Highly Active PN3 Manganese Pincer Complex Performing N-Alkylation of Amines under Mild Conditions

2019 ◽  
Vol 21 (9) ◽  
pp. 3142-3147 ◽  
Author(s):  
Leonard Homberg ◽  
Alexander Roller ◽  
Kai C. Hultzsch
Keyword(s):  
Mild Conditions ◽  
Highly Active ◽  
Pincer Complex

Arylene–ethynylene macrocycles: Privileged shape-persistent building blocks for organic materials

2012 ◽  
Vol 84 (4) ◽  
pp. 869-878 ◽  
Author(s):  
Dustin E. Gross ◽  
Ling Zang ◽  
Jeffrey S. Moore
Keyword(s):  
Functional Group ◽  
Organic Materials ◽  
Building Blocks ◽  
Alkyne Metathesis ◽  
Reaction Conditions ◽  
Traditional Methods ◽  
Dynamic Covalent Chemistry ◽  
Highly Active ◽  
Recent Advances ◽  
Metathesis Catalyst

This report details the advances in synthetic strategies toward arylene–ethynylene macrocycles (AEMs). After a brief description of traditional methods, we summarize recent advances based on dynamic covalent chemistry (DCC) whereby a highly active and functional group tolerant alkyne metathesis catalyst yields scalable quantities of AEMs under thermodynamic controlled reaction conditions.

A highly active two six-membered phosphinite palladium PCP pincer complex [PdCl{C6H3(CH2OPPri)2-2,6}]

Polyhedron ◽  
2007 ◽  
Vol 26 (7) ◽  
pp. 1445-1448 ◽  
Author(s):  
Ali Naghipour ◽  
S.J. Sabounchei ◽  
David Morales-Morales ◽  
Daniel Canseco-González ◽  
Craig M. Jensen
Keyword(s):  
Highly Active ◽  
Pincer Complex ◽  
Pcp Pincer

scholarly journals Palladium-Catalyzed Nondirected Late-Stage C-H Deuteration of Arenes

2021 ◽  
Author(s):  
Mirxan Farizyan ◽  
Arup Mondal ◽  
Sourjya Mal ◽  
Fritz Deufel ◽  
Manuel van Gemmeren
Keyword(s):  
Late Stage ◽  
Functional Group ◽  
Bidentate Ligands ◽  
Isotopic Labelling ◽  
Deuterium Incorporation ◽  
Highly Active ◽  
Palladium Catalyzed ◽  
Development Processes ◽  
Key Aspects ◽  
Sulfonamide Group

We describe a palladium catalyzed non-directed late-stage deuteration of arenes. Key aspects include the use of D2O as a convenient and easily available deuterium source and the discovery of highly active N,N-bidentate ligands containing an N-acyl sulfonamide group. The reported protocol enables high degrees of deuterium incorporation via a reversible C-H activation step and features an extraordinary functional group tolerance, allowing for the deuteration of complex substrates. This is exemplified by the late-stage isotopic labelling of various pharmaceutically relevant motifs and related scaffolds. We expect that this method, amongst other applications, will prove useful as a tool in drug development processes and for mechanistic studies.

scholarly journals Empowering alcohols as carbonyl surrogates for Grignard-type reactions

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Chen-Chen Li ◽  
Haining Wang ◽  
Malcolm M. Sim ◽  
Zihang Qiu ◽  
Zhang-Pei Chen ◽  
...  
Keyword(s):  
Functional Group ◽  
Early Stage ◽  
Grignard Reaction ◽  
Synthetic Chemistry ◽  
Reaction Conditions ◽  
Type Reaction ◽  
Pincer Complex ◽  
Late Stages

AbstractThe Grignard reaction is a fundamental tool for constructing C-C bonds. Although it is widely used in synthetic chemistry, it is normally applied in early stage functionalizations owing to poor functional group tolerance and less availability of carbonyls at late stages of molecular modifications. Herein, we report a Grignard-type reaction with alcohols as carbonyl surrogates by using a ruthenium(II) PNP-pincer complex as catalyst. This transformation proceeds via a carbonyl intermediate generated in situ from the dehydrogenation of alcohols, which is followed by a Grignard-type reaction with a hydrazone carbanion to form a C-C bond. The reaction conditions are mild and can tolerate a broad range of substrates. Moreover, no oxidant is involved during the entire transformation, with only H2 and N2 being generated as byproducts. This reaction opens up a new avenue for Grignard-type reactions by enabling the use of naturally abundant alcohols as starting materials without the need for pre-synthesizing carbonyls.

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